/Engine/Source/Developer/Localization/Public/LocTextHelper.h
This should only be used to upgrade old non-keyed archive entries when importing legacy data.
True if keys were found, false otherwise.
bool FindKeysForLegacyTranslation ( const [FString](API\Runtime\Core\Containers\FString) & InCulture, const [FLocKey](API\Runtime\Core\Internationalization\FLocKey) & InNamespace, const [FString](API\Runtime\Core\Containers\FString) & InSource, const [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FLocMetadataObject](API\Runtime\Core\Internationalization\FLocMetadataObject) > InKeyMetadataObj, [TArray](API\Runtime\Core\Containers\TArray)< [FLocKey](API\Runtime\Core\Internationalization\FLocKey) > & OutKeys ) const